Kafka suggests that societal values are distorted. We work in jobs that we hate that twist and deform us so much that we eventually become unrecognizable even to the people we love. Family tries to love us for who we are, but if we don't fit within their expectations of what we should be, they will eventually reject us; some will reject us outright. We will be loved, but only so long as we do not become a burden on the people who love us; the limits of their love may be determined not by how deeply they feel for us, but by what they think others will say about them: people will do what others will expect them to do, and therin lies their limits.
Finally, as gbeaty has pointed out, economics rule. Love, obligation, even family ties are all nothing in comparison to economics. We must survive, and in order to survive, we must make or bring in money. That which interferes with economics and survival must be eliminated, regardless of who or what that is.
Kafka's view of society is bleak. It is a society where love is not rewarded, where social laws dictate behaviour, and where, ultimately, financial considerations trump all others.